Crystal Prospect

DRILL CORE: fluorescent WILLEMITE and SPHALERITE with ZINCITE - Franklin, New Jersey, USA

Drill core segment with fluorescing pink-blue-orange color under LW UV (weaker in SW) and phosphorescent Sphalerite (variety "Cleiophane"), dark red Zincite (a rare association with Sphalerite), green SW fluorescent and phosphorescent Willemite, metallic black Franklinite-Magnetite (a mix of these spinels), with light pink colored Calcite.

Fluorescent drill cores are hard to find - especially from Franklin.

from Franklin, Franklin Mining District, Sussex County, New Jersey, USA

Measures approximately 1.25 x 1 x 0.5 inch, 1.16 oz / 32 x 25 x 13 mm, 33g

Price: 150.00 USD

Item #: A0070721

To show the fluorescent response the specimen was illuminated using 6 watt 254nm (Short Wave) / 366nm (Long Wave) UVGL-58 lamp (you need a proper UV light source to observe the fluorescence, more powerful lamp = brighter response).